Vat colors of the 1:9-anthrathiazole series



Patented Mar. 12, 1929.

UNITED STATES PATENT .OFFICE.

I e W RALPH N. LULEK, OF WILMINGTON, DELAWARE, ASSIGNOR TO E. I. DU POINT DE NEMOURS & COMBANY, OF WILMINGTON, DELAWARE, A CORPORATION OF DELA- WARE.

VAT COLORS OF THE 1: S-ANTHRATHIAZOLE SERIES.

No Drawing.

This invention relates to new vat colors of the anthraquinone series, and more particularly it relates to colors of thisseries varying from greenish-yellow to brown shades.

5 U. S. Patent to Nawiasky and Saurwein, No. 1,539,689, mentions new vat colors of the type A--CO-NHA, where A and A represent an anthraquinone nucleus. According to said patent, these new compounds may be obtained by condensing amino-anthraquinone with bet-a-carboxylio acid chloride derivatives of antliraquinone substituted in the alpha-position by'a chlorine atom or by a group NI-IR, where R represents a hydrogen atom or a radical other than beta-carboxylic acid of anthraquinone. These vat colors produce shades on cotton from orange to violet but generally yield a red shade.

This invention has as an. object the production of vat colors of the anthraquinone series by using the new intermediate 1:9-anthrathiazole-Q-carboxylic acid and condensing this intermediate with amino-anthraquinones. The intermediate referred to comprises the subject matter of my co-pending application,

Serial No. 176,578, filed March 18, 1927.

I have found that if one molecular proportion of 1-:O-autln aLhiazole-Q-carlioxylie acid chloride is condensed with one molecular proportion of a mono-amino-antlu'aquinone, or with a diamiuo-authraqllinone in which one amino group is substituted by a benzoyl group, or if two molecular proporl ions ot l :9 anthrathiazole-Q-carbonyl chloride are condensed with one molecular proportion of a 1l-I '-s iym @(ifi-COC] O:oo@

Example 2.-

Ten parts of 1 :Q-anthrathiazole-Q-carboxylie acid chloride are heated With 7.4 parts of beta-amino-anthraquinone to 160 C. for two hours in 4-00 parts of nitrobenz'enc.

product separates in greenish-yellow crystals Application filed May 19,

The.

1927. Serial No. 192,797.

diamino-anthraquinone, very valuable new vat colors are obtained, dyeing cotton-from greenish-yellow to brown shades.

The compounds formed are of the type ACONHA' in which A is alwavs the residue of 1 Q-anthrathiazfile (CO irizZ-positlon) and A may be either an anthraquinone residue in which one hydrogen mav be replaced by halogen or a diamino-anthraduinone resldue in which one amino, group may be substituted by a benzoyl residue.

The following examples are given by way of illustration:

i E wample 1.

Ten partsofl 9-anthrathiazole-Q-carboxyhe acid chloride, prepared by boiling 1: 9-an thrathrazole-Q-carboxylic acid with tive parts of thlonyl chloride for 20 hours and distilling oil' the excess, are heated with 7.4 parts of alpha-amino-anthraquinone in 250 parts ofandis purified by chlorinating at 160 C. for two hours. After filtering and Washing with nitrobenzene and alcohol it shoWs"grcenishyellow needles.

It dyes cotton in greenish-yellow fast shades from a blue hydrosulphite Vat. The

solution color in concentrated sulphuric acid is red.

l @dfioom NHFOCO co co- N-s -("J 0001 co- Nrn Example 4.

Ten parts of 1 9-anthrathiazole-2-carhoxylie acid chloride are heated with 3.9 parts of l at diamine-anthraquinone inlOO parts of nitrobenzenc to 160 C. for two hours. The dyestufi' separates in reddish-brown crystals and NS NH C O C 0 Example 5.

Ten parts of 1 9-anthrathiazole-Q-ca.rboxylie acid chloride are heated with 11.4 parts of mono benzoyl 1 5 dianiino anthraq uinone in 400 parts of nitrohenzene to 130 C. for two hours. The dyestutf separates in yellow crystals and is filtered cold, washed with nitro- The reaction takes place according to the following formulas:

t CO.NH 00 i 00 oo ning in chlorine at 150 C. for two hours the product is filtered and washed With nitrobenzone and alcohol. It dissolves in concentrated sulphuric acid with red color and dyes cotton from a violet vat in fast yellow shades.

The formation of the dyestufi? may be illustratcd by the following formulas:

NELOO is filtered off, Washed withnitrobenzene, and dried. It dyes cotton from a violet-blue vat in yellow-brown shades and dissolves in sulphuric acid with red color, Thereaction takes place according to the following formulas:

benzene and alcohol, and dried. It dissolves in sulphuric acid with a cherry red color and dyes cotton from a blue vat in greenishyellow shades of exceptional fast-ness properties.

The reaction may be illustrated by the following formulas iii C O. NH

N .CO.G4H|

7 Example 6.

Ten parts of 1 9-anthratl1iazole-2-carboxylic acid chloride are heated with 8.6 parts of 1-amino-6-chlor-anthraquinone in 300 parts nitrobenzene to 140 C. for 2 hours. The products separate in greenish-yellow crystals and may be purified by running in chlorine gas at 130 C. After filtering, washing and (lliifioocx The new vat colors produced according to my invention will dye cotton-and artificial silk in shades varying from greenish-yellow to yellow brown, are very fast to washing, and to the action of chlorine, acid, alkali and light, and exhibit generally excellent fastness properties. In most instances these new vat colors discharge with ,sulphoxite Cl and are suitable for printing.

As many apparently widely different em bodiments of this invention may be made Without departing from the spirit thereof, it is to be understood that I do not limit myself to'the foregoin examples or description except as general y indicated in the following claims. I

I claim: I

1. A new vat dye of the type Y I g l fimm, I

in which A is an anthraquinone residue.

2. A new vat dye of the type i l CO-NH-A,

in which A is a substituted anthraquinone residue.

E 5?) 0Q Oli$c O-NH I.

drying, it appears as a greenish-yellow powder, soluble in cone. sulfuric acid with red color and dyes cotton from a dark blue vat in greenish-yellow shades of exceptional fastness properties.

The reaction which takes place may be illustrated by the following formulas:

3. A new vat dye of the type Nms ii (JO-NH-A,

I I ojiificoavn-n,

in which A is an anthraquinone residue containing a group -NH--CO-R, R being an organic radicle.

5. A new vat dye having most probably the formula @L OCO N@ZZQ 6. Material dyed with the dye of claim 1.

7. Material dyed with the dye of claim 2.

8. Material dyed with the dye of claim 3.

9. Material dyed with the dye of claim 4.

10. Material dyed with the dye of claim 5.

In testimony whereof I afiix my signature.

, RALPH N. LULEK. 

